Creating graphics for high-pixel-density displays like Apple's iPhone 4 and 4S can be a tricky process. …These screens are oftentimes double the resolution of others and rely heavily on a high number …of pixels per inch, or PPI, in order to look so crisp and clean. …As designers we must be ready for this shift, because now with Apple releasing Retina display …computers, the days of designing for one resolution are gone. …The problem here is that while we have to account for the new high-resolution displays, …we can't forget about the people who don't have them. …There are still millions of people who are using older, smaller monitors, or who don't …own products like an iPhone or an iPad.…

So we have to take care of these people too. …The solution here is to work closely with your developer and understand exactly what …they need to deliver images to all of the devices and screens. …If you're already a web designer and you know how to take your images from Photoshop and …turn them into code, what you'll have to do is utilize something called CSS media queries …